Surround yourself with people who have done it before. Not consultants, not coaches, people who have walked the path you are embarking on.
The good news is that the startup community is the most helpful business community of any industry, by miles.
I'd be happy to do a call to help you figure out how and where to identify these supporters and champions. Good luck!
For a first-time startup CEO, I'd very much recommend reading --
Startup CEO: A Field Guide to Scaling Up Your Business: Matt Blumberg
Make sure to have a strong business plan that is clear, and a product you are proud to promote. Be prepared to stay in for the long haul and learn and grow from mistakes. A business with a sturdy foundation is not built overnight.
Fun book: Upstart Startups by Lieber. Also read The Go-Giver by Bob Burg & John David Mann.
Definitely seek out mentors who have traveled the road before you. I would also recommend an executive coach, but of course I'm biased there. :)
Hire the best people you can find.
Don't waste time on stuff that doesn't add value.
Build a sustainable business so if/when you want investment you're not desperate.
Don't try to hire like minded people! Hire the areas you are weak, know your financial position, your market, your customer and have a clear objective.